Lint errors fix

Next are removed:
game/script.rpy:2632 The image named 'ava uniform handsonhips neutral' was not declared.
game/script.rpy:18411 One or more text tags were left open at the end of the string: 'i', 'i' (in 'Sit down boy, and let me show you {i}war.{i}')

Next errors remain:
game/combatlabels.rpy:118 unable to evaluate filename u'PlayerTurnMusic'

game/graphic inits.rpy:349 Image bg battlegrid uses file 'Gameplay/battlegrid.jpg', which is not loadable.